CN102518667A - Conical air floating shaft system - Google Patents
Conical air floating shaft system Download PDFInfo
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- CN102518667A CN102518667A CN2011104421078A CN201110442107A CN102518667A CN 102518667 A CN102518667 A CN 102518667A CN 2011104421078 A CN2011104421078 A CN 2011104421078A CN 201110442107 A CN201110442107 A CN 201110442107A CN 102518667 A CN102518667 A CN 102518667A
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- air floating
- main shaft
- axle sleeve
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Abstract
The invention relates to a conical air floating shaft system, which comprises an air floating main shaft, an air floating inner shaft sleeve, an air floating outer shaft sleeve, and positioning plates, wherein the air floating inner shaft sleeve is arranged on the outer side of the air floating main shaft, and is matched with the air floating main shaft, the air floating outer shaft sleeve is arranged on the outer side of the air floating inner shaft sleeve, and is matched with the air floating inner shaft sleeve, and the positioning plates are arranged on both ends of the air floating main shaft. The positioning plates are fixedly connected with the air floating main shaft. Both ends of the air floating outer shaft sleeve are provided with an anti-thrust plate. The anti-thrust plate is fixedly connected with the positioning plate. In the prior art, the positioning accuracy of the existing air floating shaft system is not high, and the dry friction is easily generated. With the present invention, the technical problems in the prior art are solved, and the conical air floating shaft system is provided, wherein the conical air floating shaft system integrates the advantages of the air floating main shaft, the air floating main shaft is matched with the air floating shaft sleeves so as to effectively improve the stiffness of the shaft system, the conical surface match is adopted so as to provide high centering accuracy, and it can be ensured that the air floating shaft system of the present invention has high accuracy when the off-axis end surface is high.
Description
Technical field
The present invention relates to a kind of air-bearing shafts is, relates in particular to a kind of taper air-bearing shafts and is.
Background technique
The turnover benchmark is one of core technology in precision/ultra precise measurement instrument, experimental assembly and the manufacturing equipment.Air-bearing shafts system is applied on the said equipment as the high-precision rotary benchmark is increasing owing to have advantages such as rotary precision height, displacement sensitivity height and frictional wear be minimum.
Air-bearing shafts at present commonly used is that basic structure mainly is made up of air-floating main shaft and air-bearing shafts cover two-part, after axially and radially making up the air film gap and having formed Gas Support and lubricate, but the rotation motion in the air supporting axle sleeve of air-floating main shaft drive load.Yet existing air-floating main shaft is cylindrical; In practical application, there is following problem: one, because the top and bottom of air-floating main shaft symmetry, when the load heterogeneity of carrying, the pressure heterogeneity; A heavy side gas thickness will occur sharply reduces; Cause that main shaft directly contacts with axle sleeve, the dry friction phenomenon takes place, the heavy damage shafting precision; Two, when there being external interference, be easy to just destroy the behavioral characteristics of system, air-floating main shaft repeatability is relatively poor; Three, Location accuracy is not high, and when the load super large that carries, axially support rigidity is less, bearing capacity is relatively poor, is easy to destroy air film, and air-floating main shaft is easy to drift about.
Summary of the invention
For solve existing air-bearing shafts be Location accuracy not high, the technical problem of dry friction takes place easily; The invention provides a kind of taper air-bearing shafts is; The advantage of air-floating main shaft that taper air-bearing shafts system is not only integrated; And the taper fit of its air-floating main shaft and air-bearing shafts cover can effectively improve the rigidity of axle system, simultaneously owing to adopt its centering precision of cone match high, can guarantee that this air-bearing shafts ties up to when axial end is higher, to still have degree of precision.
Technological scheme to be solved by this invention:
Taper air-bearing shafts system, its special way is:
Comprise air-floating main shaft, be arranged on the air-floating main shaft outside and the air supporting internal axle sleeve that cooperates with air-floating main shaft, be arranged on outside the air supporting internal axle sleeve and air supporting external axle sleeve that cooperates with the air supporting internal axle sleeve and the positioning plate that is arranged on the air-floating main shaft two ends; Said positioning plate is fixedly connected with air-floating main shaft; The two ends of said air supporting external axle sleeve are provided with thrust plate; Said thrust plate is fixedly connected with positioning plate
Said air supporting external axle sleeve comprises inner and outer wall; Be provided with air cavity between said inner and outer wall, have a plurality of external nozzles that are communicated with external air source on the said outer wall, have a plurality of air outlets that are communicated with air cavity on the said inwall; The two ends of said air cavity is provided with long plug
Said air supporting internal axle sleeve is provided with the gas channel that is communicated with the inwall gas channel, be communicated with gas channel and opening is communicated with towards the end face nozzle of thrust plate, with gas channel and opening towards the radial nozzles of air-floating main shaft,
Said air-floating main shaft is to hold greatly in last cone structure, said air supporting internal axle sleeve be small end in last cone structure, said air supporting external axle sleeve is to hold in last cone structure greatly.
Place relative with the air outlet on the above-mentioned outer wall is provided with short plug.
The advantage that the present invention had:
1, the advantage of air-floating main shaft that axle of the present invention system is not only integrated; And the taper fit of its air-floating main shaft and air supporting internal axle sleeve can effectively improve the rigidity of axle system; Simultaneously owing to adopt its centering precision of cone match high, can guarantee that this axle ties up to when axial end is higher, to still have degree of precision.
2, air-floating main shaft of the present invention is connected with thrust plate with positioning plate; Its air supporting external axle sleeve matches with interior air supporting internal axle sleeve; Air-floating main shaft and air supporting internal axle sleeve closely cooperate through the conical surface, and the static pressure air that it is inner plays homogenization; Guaranteed the rotating accuracy of axle system, the taper result has then guaranteed the good stiffness that whole axle is altogether.
3, the present invention has changed the design proposal of traditional air-bearing shafts system's employing cylindrical hole axle sleeve and the cooperation of circumference main shaft, adopts novel taper air floating structure, and its air-floating main shaft and air supporting internal axle sleeve adopt taper fit.
Description of drawings
Fig. 1 is the structural representation that taper air-bearing shafts of the present invention is;
Wherein reference character is: 1-air-floating main shaft, 2-gas channel, 3-positioning plate, 4-thrust plate, the long plug of 5-, 6-air cavity, 8-air outlet, the short plug of 9-, 10-air supporting external axle sleeve, 11-radial nozzles, the external nozzle of 12-, 13-air supporting internal axle sleeve, 14-end face nozzle.
Embodiment
As shown in Figure 1; Taper air-bearing shafts system; Comprise air-floating main shaft 1, be equipped with at the air supporting internal axle sleeve 13 outside the air-floating main shaft, be equipped with air supporting external axle sleeve 10 outside the air supporting internal axle sleeve and the positioning plate 3 that is arranged on air-floating main shaft 1 two ends with air supporting internal axle sleeve 13 with air-floating main shaft that positioning plate 3 is fixedly connected with air-floating main shaft 1, the two ends of air supporting external axle sleeve 13 are provided with thrust plate 4; Thrust plate 4 is fixedly connected with positioning plate 3
The air supporting external axle sleeve is provided with air cavity 6; Air cavity 6 is divided into outer wall and inwall with the air supporting external axle sleeve; Away from the air supporting internal axle sleeve be outer wall, let on the outer wall be evenly distributed in a plurality of external nozzles 12 that gas is provided, inwall is provided with the air outlet 8 that is communicated with air cavity 6; The two ends of air cavity is provided with long plug 5
One side of closing on the air supporting external axle sleeve on the air supporting internal axle sleeve is provided with gas channel 2, and gas channel 2 is arranged on the two ends of air supporting internal axle sleeve, and the air outlet is communicated with gas channel; The air supporting internal axle sleeve also is provided with radial nozzles 11 and end face nozzle 14; The inlet of radial nozzles is communicated with gas channel, and the outlet of radial nozzles is opened between air supporting internal axle sleeve and air-floating main shaft, and the inlet of end face nozzle is communicated with gas channel; The outlet of said end face nozzle is opened between air supporting internal axle sleeve and thrust plate; Air-floating main shaft is taper, and the air supporting internal axle sleeve is taper, and the air supporting external axle sleeve is taper.
Claims (2)
1. the taper air-bearing shafts is, it is characterized in that:
Comprise air-floating main shaft, be arranged on the air-floating main shaft outside and the air supporting internal axle sleeve that cooperates with air-floating main shaft, be arranged on outside the air supporting internal axle sleeve and air supporting external axle sleeve that cooperates with the air supporting internal axle sleeve and the positioning plate that is arranged on the air-floating main shaft two ends; Said positioning plate is fixedly connected with air-floating main shaft; The two ends of said air supporting external axle sleeve are provided with thrust plate; Said thrust plate is fixedly connected with positioning plate
Said air supporting external axle sleeve comprises inner and outer wall; Be provided with air cavity between said inner and outer wall, have a plurality of external nozzles that are communicated with external air source on the said outer wall, have a plurality of air outlets that are communicated with air cavity on the said inwall; The two ends of said air cavity is provided with long plug
Said air supporting internal axle sleeve is provided with the gas channel that is communicated with the inwall gas channel, be communicated with gas channel and opening is communicated with towards the end face nozzle of thrust plate, with gas channel and opening towards the radial nozzles of air-floating main shaft,
Said air-floating main shaft is to hold greatly in last cone structure, said air supporting internal axle sleeve be small end in last cone structure, said air supporting external axle sleeve is to hold in last cone structure greatly.
2. taper air-bearing shafts according to claim 1 is that it is characterized in that: place relative with the air outlet on the said outer wall is provided with short plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104421078A CN102518667A (en) | 2011-12-19 | 2011-12-19 | Conical air floating shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104421078A CN102518667A (en) | 2011-12-19 | 2011-12-19 | Conical air floating shaft system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102518667A true CN102518667A (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104421078A Pending CN102518667A (en) | 2011-12-19 | 2011-12-19 | Conical air floating shaft system |
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| CN (1) | CN102518667A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047290A (en) * | 2012-12-31 | 2013-04-17 | 浙江工业大学 | Cone-shaped friction-free rotary air supply air floatation device |
| CN103047289A (en) * | 2012-12-31 | 2013-04-17 | 浙江工业大学 | Air-suspending friction-free rotary air supply device |
| CN103047287A (en) * | 2012-12-31 | 2013-04-17 | 浙江工业大学 | Cone-shaped friction-free rotary air supply air floatation device |
| CN104677412A (en) * | 2015-03-02 | 2015-06-03 | 洛阳理工学院 | Air floating centring measurement device for mechanical tappet |
| CN107907143A (en) * | 2017-10-31 | 2018-04-13 | 北京航天计量测试技术研究所 | A kind of convertible air-floating main shaft in space |
| CN111842943A (en) * | 2020-06-08 | 2020-10-30 | 广州市昊志机电股份有限公司 | Electric main shaft core assembly, air-floatation electric main shaft and drilling machine |
| CN113124056A (en) * | 2021-04-27 | 2021-07-16 | 北京工业大学 | Air-float thrust bearing based on axial dense-bead adsorption |
| WO2021244023A1 (en) * | 2020-06-05 | 2021-12-09 | 广州市昊志机电股份有限公司 | Air bearing spindle and machine tool |
| CN115182928A (en) * | 2022-03-28 | 2022-10-14 | 北方工业大学 | Dynamic antifriction method for composite axis visual axis stabilizing equipment |
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| SU1599596A1 (en) * | 1987-10-30 | 1990-10-15 | Красноярский Политехнический Институт | Sliding-contact bearing |
| US6019515A (en) * | 1997-06-23 | 2000-02-01 | Ntn Corporation | Externally pressurized gas bearing assembly |
| CN1357418A (en) * | 2000-12-08 | 2002-07-10 | 摩根建设公司 | Sleeve for oil film bearing of rolling mill |
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2011
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| SU1599596A1 (en) * | 1987-10-30 | 1990-10-15 | Красноярский Политехнический Институт | Sliding-contact bearing |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047290A (en) * | 2012-12-31 | 2013-04-17 | 浙江工业大学 | Cone-shaped friction-free rotary air supply air floatation device |
| CN103047289A (en) * | 2012-12-31 | 2013-04-17 | 浙江工业大学 | Air-suspending friction-free rotary air supply device |
| CN103047287A (en) * | 2012-12-31 | 2013-04-17 | 浙江工业大学 | Cone-shaped friction-free rotary air supply air floatation device |
| CN103047290B (en) * | 2012-12-31 | 2015-02-18 | 浙江工业大学 | Cone-shaped friction-free rotary air supply air floatation device |
| CN103047289B (en) * | 2012-12-31 | 2015-02-18 | 浙江工业大学 | Air-suspending friction-free rotary air supply device |
| CN104677412A (en) * | 2015-03-02 | 2015-06-03 | 洛阳理工学院 | Air floating centring measurement device for mechanical tappet |
| CN107907143A (en) * | 2017-10-31 | 2018-04-13 | 北京航天计量测试技术研究所 | A kind of convertible air-floating main shaft in space |
| WO2021244023A1 (en) * | 2020-06-05 | 2021-12-09 | 广州市昊志机电股份有限公司 | Air bearing spindle and machine tool |
| CN111842943A (en) * | 2020-06-08 | 2020-10-30 | 广州市昊志机电股份有限公司 | Electric main shaft core assembly, air-floatation electric main shaft and drilling machine |
| CN113124056A (en) * | 2021-04-27 | 2021-07-16 | 北京工业大学 | Air-float thrust bearing based on axial dense-bead adsorption |
| CN115182928A (en) * | 2022-03-28 | 2022-10-14 | 北方工业大学 | Dynamic antifriction method for composite axis visual axis stabilizing equipment |
| CN115182928B (en) * | 2022-03-28 | 2023-08-11 | 北方工业大学 | Dynamic antifriction method of composite shaft visual axis stabilizing equipment |
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Application publication date: 20120627 |